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At a particular temperature and atmospheric pressure, the solid and liquid phases of a pure substance can exist in equilibrium. Which of the following term defines this temperature?

(i) Normal melting point

 (ii) Equilibrium temperature

 (iii) Boiling point

(iv) Freezing point

Answers (1)

The answer is the option (i) and (iv)

Explanation: Ice and water are in equilibrium only at a certain temperature and pressure. For any pure substance at atmospheric pressure, the temperature at which the solid and liquid phases are at equilibrium is called the normal melting point or normal freezing point of the substance.

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